The 19-year-old from Grimsby, Ont., Canada pounced at the rolling start, moving alongside front row starters Nicolas Costa and Kyle Kaiser on the drag race toward Turn Four before taking the lead with a bold maneuver to secure the inside line – and the lead – into Turn Six.

Bittersweet day for Andretti Autosport, as Grist earns the victory while Blackstock goes out before the green flag

Nicolas Costa overcame a severe bout of stomach cramps to score a finely judged victory in this evening’s Cooper Tires Pro Mazda Grand Prix at the Mid-Ohio Sports Car Course, Round 10 of the Pro Mazda Championship Presented by Cooper Tires.

Pigot advances to fourth with Alberico to seventh at the checkered flag.

American Spencer Pigot and Canadian Scott Hargrove will continue their battle for supremacy in the Pro Mazda Championship Presented by Cooper Tires at the Cooper Tires Pro Mazda Grand Prix on August 1-3. After nine races and with five rounds remaining, the pair are separated by just 17 points prior to this weekend’s twin bill of 40-minute races at the 2.258-mile, 13-turn Mid-Ohio Sports Car Course in Lexington, Ohio.